NumberResearchRecent thousands-block assignments
16 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 563
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-26 | 563-216-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2024-01-26 | 563-216-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2024-01-26 | 563-867-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | DAVENPORT | IA |
| 2024-01-26 | 563-867-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | DAVENPORT | IA |
| 2024-01-17 | 563-540-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WAUKON | IA |
| 2024-01-05 | 563-286-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2024-01-05 | 563-286-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2024-01-05 | 563-296-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2024-01-05 | 563-296-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2024-01-05 | 563-346-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2023-12-18 | 563-318-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | TIPTON | IA |
| 2023-12-11 | 563-346-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DAVENPORT | IA |
| 2023-12-05 | 563-366-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2023-12-05 | 563-366-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2023-12-05 | 563-366-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CRESCO | IA |
| 2023-11-27 | 563-550-1XXX | 1000–1999 | Assigned | AUREON COMMUNICATIONS, LLC | 444G | CALMAR | IA |
| 2023-10-18 | 563-205-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DAVENPORT | IA |
| 2023-10-18 | 563-306-6XXX | 6000–6999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DAVENPORT | IA |
| 2023-10-18 | 563-306-7XXX | 7000–7999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DAVENPORT | IA |
| 2023-10-18 | 563-306-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DAVENPORT | IA |
| 2023-10-18 | 563-306-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | DAVENPORT | IA |
| 2023-10-13 | 563-844-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2023-09-18 | 563-219-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | CLINTON | IA |
| 2023-09-18 | 563-366-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | CRESCO | IA |
| 2023-09-18 | 563-366-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | CRESCO | IA |
| 2023-09-18 | 563-613-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | LOW MOOR | IA |
| 2023-08-14 | 563-201-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | DYERSVILLE | IA |
| 2023-08-14 | 563-205-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2023-08-14 | 563-205-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2023-08-03 | 563-216-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DUBUQUE | IA |
| 2023-07-27 | 563-220-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | SABULA | IA |
| 2023-07-13 | 563-208-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2023-07-13 | 563-208-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2023-07-13 | 563-208-7XXX | 7000–7999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2023-07-13 | 563-208-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2023-07-13 | 563-208-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | MUSCATINE | IA |
| 2023-07-13 | 563-307-3XXX | 3000–3999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2023-07-13 | 563-341-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2023-07-13 | 563-341-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2023-07-13 | 563-341-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2023-07-13 | 563-341-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2023-07-13 | 563-348-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | DUBUQUE | IA |
| 2023-06-29 | 563-205-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2023-06-29 | 563-205-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | DAVENPORT | IA |
| 2023-06-29 | 563-477-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IA | 221F | CLINTON | IA |
| 2023-06-13 | 563-428-2XXX | 2000–2999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | RANDALIA | IA |
| 2023-06-13 | 563-429-6XXX | 6000–6999 | Assigned | HAWKEYE INTERCONNECT COMPANY - IA | 429J | ALPHA | IA |
| 2023-06-12 | 563-514-7XXX | 7000–7999 | Assigned | NUSO, LLC | 732J | DAVENPORT | IA |
| 2023-05-24 | 563-205-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
| 2023-05-24 | 563-205-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DAVENPORT | IA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.